A police officer stood in front of Traders Hotel, where an explosion occurred, in central Yangon early Oct. 14, 2013. A small explosion ripped through a room in the hotel just before midnight on Monday, wounding one American, officials said.

A police officer stood in front of Traders Hotel, where an explosion occurred, in central Yangon early Oct. 14, 2013. A small explosion ripped through a room in the hotel just before midnight on Monday, wounding one American, officials said.

A soldier stood guard in front of the Traders Hotel after an explosion was reported at the building in Yangon, Myanmar, 14 Oct. 2013. Media reports citing police sources say that the suspected bomb explosion in the luxury hotel in Yangon left at least one American national slightly injured.

A soldier stood guard in front of the Traders Hotel after an explosion was reported at the building in Yangon, Myanmar, 14 Oct. 2013. Media reports citing police sources say that the suspected bomb explosion in the luxury hotel in Yangon left at least one American national slightly injured.

A military official walked out of Traders Hotel after inspecting a room following an explosion at the hotel in central Yangon on Oct. 14, 2013. A small explosion ripped through a room in the hotel just before midnight on Monday, wounding one American, officials said.

A military official walked out of Traders Hotel after inspecting a room following an explosion at the hotel in central Yangon on Oct. 14, 2013. A small explosion ripped through a room in the hotel just before midnight on Monday, wounding one American, officials said.

Police patrolled near the Traders Hotel in Yangon, Myanmar, on Oct. 14, 2013 following an explosion just before midnight Monday, which ripped apart a guest's 9th floor bathroom and slightly wounded an American woman in the latest in a series of unexplained blasts to hit the Southeast Asian country. It was not immediately clear what caused the explosion, but the incident came after unidentified assailants planted three homemade bombs in and around Yangon in recent days, reportedly killing two people and injuring three others.

Police patrolled near the Traders Hotel in Yangon, Myanmar, on Oct. 14, 2013 following an explosion just before midnight Monday, which ripped apart a guest's 9th floor bathroom and slightly wounded an American woman in the latest in a series of unexplained blasts to hit the Southeast Asian country. It was not immediately clear what caused the explosion, but the incident came after unidentified assailants planted three homemade bombs in and around Yangon in recent days, reportedly killing two people and injuring three others.

A soldier held a dog in front of Traders Hotel following an explosion at the hotel in central Yangon on Oct.14, 2013. A small explosion ripped through a room in the hotel just before midnight on Monday, wounding one American, officials said.

A soldier held a dog in front of Traders Hotel following an explosion at the hotel in central Yangon on Oct.14, 2013. A small explosion ripped through a room in the hotel just before midnight on Monday, wounding one American, officials said.

Troops guarded Traders Hotel in Yangon after an explosion there on Oct.14. A suspected bomb blast shook the luxury hotel in Myanmar's main city, Yangon, late on Monday, leaving one American guest slightly wounded, police said.

Troops guarded Traders Hotel in Yangon after an explosion there on Oct.14. A suspected bomb blast shook the luxury hotel in Myanmar's main city, Yangon, late on Monday, leaving one American guest slightly wounded, police said.

Reporters tred to interview a police officer in front of Traders Hotel after an explosion at the hotel in central Yangon on Oct. 14, 2013. According to local media, a small explosion ripped through a room in the hotel just before midnight on Monday, wounding one American.

Reporters tred to interview a police officer in front of Traders Hotel after an explosion at the hotel in central Yangon on Oct. 14, 2013. According to local media, a small explosion ripped through a room in the hotel just before midnight on Monday, wounding one American.